BB Tools
BB Micro Drill (0.3mm~3.99mm) D=4mm
BB Micro Drill (0.3mm~3.99mm) D=4mm
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| Name:BB Micro Drill Material:Micro-grained carbde | |||||
| Number of flutes:2 Series:BB2055 | |||||
| Diameter of shank:4mm Application:For general purpose | |||||
 |
|
Cuting diameter |
Shank diameter (D) |
Cuttlng length (L) |
Total length (OL) |
Angle | Tolerance |
| 0.3~0.5 | 4 | 4 | 50 | 118° | -0.005 |
| 0.51~0.99 | 4 | 6 | 50 | 118° | -0.005 |
| 1.01~1.49 | 4 | 8 | 50 | 118° | -0.005 |
| 1.51~1.99 | 4 | 10 | 50 | 118° | -0.005 |
| 1.0 | 4 | 11 | 50 | 118° | -0.005 |
| 1.1 | |||||
| 1.1 | |||||
| 1.2 | |||||
| 1.2 | |||||
| 1.25 | 4 | 12 | 50 | 118° | -0.005 |
| 1.3 | |||||
| 1.35 | |||||
| 1.4 | |||||
| 1.45 | |||||
| 1.5 | |||||
| 1.55 | |||||
| 1.6 | |||||
| 1.65 | |||||
| 1.7 | |||||
| 1.75 | |||||
| 1.8 | |||||
| 1.85 | |||||
| 1.9 | |||||
| 1.95 | |||||
| 2.01~2.49 | 4 | 12 | 50 | 118° | -0.005 |
| 1.95 | 4 | 15 | 50 | 118° | -0.005 |
| 2 | |||||
| 2.05 | |||||
| 2.1 | |||||
| 2.15 | |||||
| 2.2 | |||||
| 2.25 | |||||
| 2.3 | |||||
| 2.35 | |||||
| 2.4 | |||||
| 2.45 | |||||
| 2.5 | |||||
| 2.51~3.0 | 4 | 15 | 50 | 118° | -0.005 |
| 3.01~3.49 | 4 | 18 | 50 | 118° | -0.005 |
| 3.05 | 4 | 20 | 50 | 118° | -0.005 |
| 3.1 | |||||
| 3.15 | |||||
| 3.2 | |||||
| 3.25 | |||||
| 3.3 | |||||
| 3.35 | |||||
| 3.4 | |||||
| 3.45 | |||||
| 3.5 | |||||
| 3.3 | 6 | 20 | 62 | 118° | -0.005 |
| 3.4 | |||||
| 3.6 | |||||
| 3.7 | |||||
| 3.4 | 6 | 22 | 62 | 118° | -0.005 |
| 3.5 | |||||
| 3.51~3.99 | 4 | 20 | 50 | 118° | -0.005 |
| 3.8 | 6 | 24 | 66 | 118° | -0.005 |
| 3.9 |
BB Micro Drill - BB2055 (1PC)
-Solid Carbide for Ultimate Precision & Durability.
Designed for machine use only—not for handheld drills.
BB 微型钻头 - BB2055 (1支)
核心特点
整体硬质合金材质，具备极高硬度与耐磨性，专为精密、持久加工而设计。
-Application:
Steel, Stainless Steel, Cast Iron, Tool & Die Steel, PCB (Circuit Board), Acrylic, etc.
适用材料：
钢材、不锈钢、铸铁、模具钢、电路板、亚克力等。
-Diameter of shank :4mm
Recommended Cutting Conditions
*Reference parameters are used as the general standard and need to be adjusted according to the Drilling environment.
*When abnormal noise occurs to the workpiece and equipment, please check the situation and change the parameters.
*When the highest speed does not reach the reference standard, please use the highest speed of your equipment for machining, but note that the feed speed also needs to be adjusted proportionally.
*Please fully provide cutting cooling water to the machining position and drilling edge.
*Table parameters are applicable to machining depth smaller than 3xDc. If the depth is greater than 3xDc, reduce the speed by 20%.
*According to the material and depth, select the grading machining method, please return to the top of the hole when grading feed. The grading amount is about 0.2 ~ 1Dc, when the diameter is less than 1mm, 0.1~0.2Dc.
*The beat of the drill bit should be less than 0.02mm.
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